The Alpha Communications® / TekTone SF525ES Maintained NO Universal Contact Wireless Transmitter is for use with the Tek-CARE®500 (TC500) Wireless Emergency Call System. The SF525ES is based on EchoStream® spread spectrum technology and transmits signals at the 900 MHz frequency. The SF525ES sends supervised signals to the TekCARE®500 system at a selectable interval, making it ideal for both high security installations and residential installations. It supports a NO maintained external contact closure.
The SF525ES requires no physical wiring connections to transmit an alarm call and is powered by a 3V lithium battery. The SF525ES has a tamper-resistant case and includes a mounting bracket.